BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Nabil Iqbal (Durham U.)
DTSTART:20210329T180000Z
DTEND:20210329T190000Z
DTSTAMP:20260423T041820Z
UID:UKYhepth/36
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UKYhepth/36/
 ">Mean string field theory</a>\nby Nabil Iqbal (Durham U.) as part of Theo
 retical Physics Seminars (Kentucky)\n\n\nAbstract\nJust as conventional gl
 obal symmetries result in a conserved particle number\, higher-form global
  symmetries are associated with a conserved density of higher dimensional 
 objects\, such as strings or branes. Many well-known systems possess such 
 symmetries. I will present an overview of the applications of such symmetr
 ies and discuss the prospect of using them to enlarge the usual Landau cla
 ssification of the phases of matter. I will then describe the construction
  of a continuum Landau-Ginzburg theory to describe the spontaneous breakin
 g of a higher-form symmetry. As the order parameter is an operator that cr
 eates a string\, the framework can be thought of as a kind of "mean string
  field theory" that provides a non-perturbative description where effectiv
 e strings can be created and destroyed. I will argue that many aspects of 
 higher form symmetries — including the phase structure\, the behavior of
  line operators\, and the dynamics of Goldstone modes — can be transpare
 ntly understood in this framework.\n
LOCATION:https://researchseminars.org/talk/UKYhepth/36/
END:VEVENT
END:VCALENDAR